EX-21.1

SUBSIDIARIES OF WORTHINGTON STEEL, INC.

The following is a list of the subsidiaries, direct and indirect, of Worthington Steel, Inc. as of July 30, 2026. The names of indirectly-owned subsidiaries are indented under the names of their respective immediate parents:


Subsidiaries									Place of Organization
Cleveland Pickling, Inc.									Delaware
WSMX Holdings, LLC (1)									Ohio
	Worthington Steel Mexico, S.A. de C.V. (1)								Mexico
Tempel Steel Company, LLC									Illinois
	T do B, LLC								Illinois
	Tempel Canada Company								Canada
	Tempel de Mexico, S. de R.L. de C.V.								Mexico
	Temple HK Holding Co., Limited								Hong Kong
		Tempel Changzhou Precision Metal Products Co. Ltd.							China
	Tempel Precision Metal Products India Pvt. Ltd.								India
	S.I.T.E.M. S.p.A. (2)								Italy
		Decoup S.A.S.							France
		Sitem Slovakia spol. s r.o.							Slovakia
		Stanzwerk AG							Switzerland
		Tempel Steel Europe GmbH							Germany
The Worthington Steel Company									Ohio
	Worthington Steel Holding GmbH								Germany
		Worthington Steel GmbH							Germany
			Klöckner & Co SE (3)						Germany
				ODS Metering Systems B.V.					Netherlands
					ODS Belgium B.V. (4)				Belgium
					ODS do Brasil Sistemas de Medicao Ltda.				Mexico
					ODS Metering Systems Asia Pacific Pte. Ltd.				Singapore
					ODS Middle East FZE				United Arab Emirates
					ODS Saudi Co. LLC				Saudi Arabia
						ODS for Maintenance			Saudi Arabia
				Debrunner Koenig AG					Switzerland
					Simfloc AG				Switzerland
					PC-Tech S.A.				Switzerland
					Müller Wüst AG				Switzerland
					Debrunner Metallservice AG				Switzerland
					Debrunner Bewetec AG				Switzerland
					Debrunner Bewehrungstechnik AG				Switzerland
					Debrunner Acifer AG				Switzerland
				Klöckner USA Holding Inc.					Delaware
					Kloeckner Metals Corporation				Delaware
						Kloeckner Metals Service Centers de Mexico, S. de R.L. de C.V.			Mexico
							Kloeckner Specialty Metals de Mexico, S. de R.L. de C.V.		Mexico
								NMML Asia, Limited	Hong Kong
						Kloeckner Metals P.R., Inc.			Delaware
						California Steel and Tube, LLC			Delaware
						Kloeckner Metals Relief Fund, Inc.			Delaware
						International Machinery Sales, Inc.			South Carolina
						Amerinox Processing, Inc.			New Jersey
						Kloeckner Acquisitions, LLC			Delaware
					Kloeckner Metals Germany GmbH				Germany
						Ambo Stahl GmbH.			Germany
						Klöckner Stahl und Metall Ges.m.b.H.			Austria
					Becker Stahl-Service GmbH				Germany
						Becker Aluminum-Service GmbH			Germany
						Becker Stainless GmbH			Germany


			Becker Stainless Center GmbH		Germany
		Umformtechnik Stendal GmbH			Germany
			Umformtechnik Stendal UTS s.r.o.		Slovakia
		XOM Materials GmbH			Germany
		Klöckner & Co Financial Services S.A.			Luxembourg
		kloeckner.i GmbH			Germany
		Klöckner & Co Center of Excellence GmbH			Germany
		kloeckner.v GmbH			Germany
			Paua Ventures Co-Invest 2 GmbH & Co. KG		Germany
			HV Holtzbrinck Ventures Fund VIII GmbH & Co.		Germany
			Unternehmertum VC Fonds III GmbH & Co. KG		Germany
			SquareOne Fonds 2 GmbH & Co. KG		Germany
			468 Capital GmbH & Co. KG		Germany
			Target Global Growth Fund II, SCSp-RAIF		Luxembourg
			BigRep GmbH		Germany
				Keelvar System Ltd.	Ireland
	Worthington Taylor, LLC				Michigan
	Worthington Receivables Company, LLC				Delaware
	Worthington Steel HQ, LLC				Ohio
The Worthington Steel Company, LLC					Ohio
Worthington Steel Rome, LLC					Ohio
Worthington Steel Services, LLC					Ohio
Worthington WSP, LLC					Michigan
WS Mexico Holdings, LLC (1)					Ohio
WS Escrow LLC					Delaware

Joint Ventures					Place of Organization
Serviacero Planos, S. de R.L. de C.V. (5)					Mexico
Spartan Steel Coating, L.L.C. (6)					Michigan
TWB Company, L.L.C. (7)					Michigan
	Tailor Welded Blanks of Canada, Inc.				Canada
	TWB of Ohio, Inc.				Ohio
	TWB Industries, S.A. de C.V. (8)				Mexico
	TWB de Mexico, S.A. de C.V. (8)				Mexico
Worthington Samuel Coil Processing LLC (9)					Ohio
Worthington Specialty Processing					Michigan
	ProCoil Company, LLC				Delaware
Birs-Stahl AG (10)					Switzerland
Kloeckner Metalls Austria GmbH & Co KG (11)					Germany

(1)

Worthington Steel Mexico, S.A. de C.V. is a consolidated joint venture that is jointly owned by WSMX Holdings, LLC and WS Mexico Holdings, LLC.

(2)

Consolidated joint venture with 52% owned by Tempel Steel Company, LLC and remaining 48% by collection of private investors.

(3)

Worthington Steel GmbH owns approximately 62% of Klöckner & Co SE's total outstanding share capital.

(4)

The remaining 20% of the equity of ODS Belgium B.V. is owned by Wim Ponet (at 10%) and Filip Van Meel (at 10%).

(5)

Unconsolidated joint venture with 50% owned by Worthington Steel Mexico, S.A. de C.V. and 50% owned by Inverzer, S.A. de C.V.

(6)

Consolidated joint venture with 52% owned by Worthington WSP, LLC and 48% owned by Cleveland-Cliffs Steel Inc.

(7)

Consolidated joint venture with 55% owned by Worthington WSP, LLC and 45% owned by a subsidiary of Baosteel Tailored Blanks International GmbH.

(8)

Consolidated joint venture ownership with 99% owned by TWB Company, LLC and 1% owned by TWB of Ohio, Inc.

(9)

Consolidated joint venture with 63% owned by Cleveland Pickling, Inc. and 37% owned by Samuel Manu-Tech Pickling Inc.

(10)

50% of the equity of Birs-Stahl AG is owned by Debrunner Acifer AG and 50% is owned by Spaether AG.

(11)

51% of Kloeckner Metalls Austria GmbH & Co KG is owned by Klöckner Stahl und Metall Ges.m.b.H. and 24.5% is owned by Manfred J.C. Niemann Beteiligungs-GmbH and at 24.5% is owned by and Manfred J.C. Niemann Metallhandels-GmbH (at 24.5%). This is a joint venture partnership (limited partnership / KG) with Niemann.